Custom cases in bulk?

Hey guys.. i have a clothing brand and i was looking into creating some iphone cases and selling them to customers. Only problem is, i cant find a decent site that sells for cheap and prints. I need to buy them in bulk..atleast cheap enough so i can make some profit.

I live in Mississauga Ontario so if you have anyone or any place that you know that does this sort of thing..please let me know. If its overseas..ll take it into consideration.